package cli import ( "fmt" "math" "os" "os/user" "path/filepath" "time" "github.com/Masterminds/semver" "github.com/volker-raschek/flucky/cli/daemon" "github.com/volker-raschek/flucky/cli/sensor" "github.com/volker-raschek/flucky/pkg/config" "github.com/volker-raschek/flucky/pkg/types" uuid "github.com/satori/go.uuid" "github.com/spf13/cobra" ) // Execute a func Execute(version *semver.Version) error { rootCmd := &cobra.Command{ Use: "flucky", // Short: "flucky - operate with differen sensors, his values and remote servers to synchronize measured values", PersistentPreRunE: preRunError, Version: version.String(), } defaultConfigFile, err := getDefaultConfigFile() if err != nil { return err } rootCmd.PersistentFlags().String("config", defaultConfigFile, "Config file") rootCmd.PersistentFlags().String("loglevel", "info", "Set the Loglevel. Possible values: debug, info, warn, error, fatal") subCommands := []func(cmd *cobra.Command) error{ daemon.InitCmd, sensor.InitCmd, } for _, subCommand := range subCommands { if err := subCommand(rootCmd); err != nil { return err } } err = rootCmd.Execute() if err != nil { return err } return nil } func preRunError(cmd *cobra.Command, args []string) error { configFile := cmd.Flag("config").Value.String() // check if config file exists if _, err := os.Stat(configFile); os.IsNotExist(err) { hostname, err := os.Hostname() if err != nil { return fmt.Errorf("Failed to determine the hostname: %v", err) } // Time must be truncted for postgres. Postgres currently does not support // nanoseconds which is automatically include into the go time object postgresTimeStamp := time.Now() location, err := time.LoadLocation("Europe/Berlin") if err != nil { return err } postgresTimeStamp = time.Date(postgresTimeStamp.Year(), postgresTimeStamp.Month(), postgresTimeStamp.Day(), postgresTimeStamp.Hour(), postgresTimeStamp.Minute(), postgresTimeStamp.Second(), int(math.Round(float64(postgresTimeStamp.Nanosecond())/1000000)*1000000), location) // Default configuration cnf := config.Config{ Device: &types.Device{ ID: uuid.NewV4().String(), Name: hostname, CreationDate: postgresTimeStamp, }, StorageEndpoint: "sqlite3:///var/log/flucky/sqlite.db?cache=shared&mode=memory&FKSupport=True", } err = config.Write(&cnf, configFile) if err != nil { return err } } return nil } // GetDefaultConfigPath returns the default path to the configuration of // rpm-distributor func getDefaultConfigFile() (string, error) { u, err := user.Current() if err != nil { return "", fmt.Errorf("Can not read current user: %v", err) } switch u.Uid { case "0": return "/etc/flucky/config.json", nil default: return filepath.Join(u.HomeDir, ".config/flucky/config.json"), nil } }